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30639 (6246 P-L)
Classification: Outer Main-belt Asteroid          SPK-ID: 2030639
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1857667458449328 4.2981e-08  
a 3.214939451962856 1.8993e-08 au
q 2.617710611883225 1.4309e-07 au
i 3.60033462731974 5.1854e-06 deg
node 303.31775806659 7.523e-05 deg
peri 87.66402661661627 7.6579e-05 deg
M 104.9147659653425 1.5209e-05 deg
tp 2458586.890973798066
(2019-Apr-13.39097380)
8.5913e-05 TDB
period 2105.511530242254
5.76
1.8658e-05
5.108e-08
d
yr
n .1709798283358626 1.5151e-09 deg/d
Q 3.812168292042488 2.2521e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1294  
   data-arc span      22094 days (60.49 yr)  
   first obs. used      1960-09-24  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .509  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 04:30:49  

Additional Information
 Earth MOID = 1.62535 au 
 Jupiter MOID = 1.67309 au 
 T_jup = 3.160 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.96   n/a MPCxxxxx  
rotation period rot_per 2.78 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Chang, C.-K.; Lin, H.-W.; Ip, W.-H.; Prince, T.A.; et al. (2016) Astrophys. J. Sup. Ser. 227, A20.]

30639 (6246 P-L)          Discovered 1960-Sep-24 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20011002/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 6246 P-L = 1984 WY2 = 1992 EG13 = 1997 AN6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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